Update README link to latest release [ci skip]
Update README link to latest release [ci skip]

Signed-off-by: Ivan Kozlovic <a15f8b81a160b4eebe5c84e9e3b65c87b9b2f18e@synadia.com>

nats-io/gnatsd,apcera/gnatsd,wallyqs/gnatsd,nats-io/gnatsd,apcera/gnatsd,wallyqs/gnatsd